"This Powerblanket heated blanket is designed to keep 420-lb. liquid propane and other gas cylinder tanks at their optimal temperatures to maintain optimal pressure, enhance performance and increase efficiency. U.S.A. Closure Type Strap and buckle, Dimensions L x W in. 53 x 104, Thermal Cutoff Safety Device Yes, Temperature Range F 80-90 10F, Finish Type Vinyl outer shell, Receptacle Type Required Standard, Volts 120V, Capacity 1 Cylinder, Power Cord ft. 6, Amps 4.5, Compatible With 420 lb. cylinder, Common Usage Cylinder warmer, Plug Type 3-prong, Cylinders qty. 1 420 Lb. cylinder, Watts 548, Thermostat Included Yes."